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Investigation of Generalized SIFs of cracks in 3D piezoelectric media under various crack-face conditions

Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 280-298 doi: 10.1007/s11709-019-0586-7

Abstract: permittivity of a medium inside the crack gap on intensity factors of planar and non-planar cracks in linear piezoelectricmedia.

Keywords： crack-face conditions     intensity factors     non-flat cracks     permittivity     piezoelectric media     SGBEM    

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Review on piezoelectric actuators: materials, classifications, applications, and recent trends

Frontiers of Mechanical Engineering 2024, Volume 19, Issue 1, doi: 10.1007/s11465-023-0772-0

Abstract: Piezoelectric actuators are a class of actuators that precisely transfer input electric energy into displacement, force, or movement outputs efficiently via inverse piezoelectric effect-based electromechanical couplingVarious types of piezoelectric actuators have sprung up and gained widespread use in various applicationsThis paper systematically reviews the piezoelectric materials, operating principles, representative schemes, characteristics, and potential applications of each mainstream type of piezoelectric actuator.

Keywords： piezoelectric actuator     piezoelectric effect     amplified piezoelectric actuator     ultrasonic actuator     stepping actuator     piezoelectric polymer    

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Research on applications of piezoelectric materials in smart structures

Jinhao QIU, Hongli JI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 99-117 doi: 10.1007/s11465-011-0212-4

Abstract:

Piezoelectric materials have become the most attractive functional materials for sensors and actuatorsIn this article, some research activities on the applications of piezoelectric materials in smart structuresenergy harvesting using new electronic interfaces, structural health monitoring based on a new type of piezoelectric

Keywords： piezoelectric materials     vibration control     energy harvesting     structural health monitoring     piezoelectric    

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Present situation and classification of piezoelectric pump

Fang YE, Shouyin WANG, Wei CHENG, Qixiao XIA, Jianhui ZHANG,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 420-429 doi: 10.1007/s11465-009-0052-7

Abstract: According to the present classification method for a piezoelectric pump, this paper reviews the developmentA volumetric piezoelectric pump, which belongs to traditional volumetric pumps, can be divided into apiezoelectric pump with or without valves.A new valveless piezoelectric pump nowadays becomes a hot issue in scientific research.New forms of piezoelectric pumps, different from traditional ones, are only at the stage of conception

Keywords： piezoelectric pump     development and present situation     new classification method     valveless piezoelectricpump     new forms of piezoelectric pump    

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Transport of antibiotic resistance plasmids in porous media and the influence of surfactants

Peipei Chen, Chaoqi Chen, Xiqing Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0986-7

Abstract: Transport of engineered antibiotic resistance plasmids in porous media has been reported to potentiallyIn this work, transport of an indigenous resistance plasmid pK5 in porous media was investigated through

Keywords： Indigenous plasmid     Transport     Porous media     Surfactants    

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Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 114-120 doi: 10.1007/s11709-014-0267-5

Abstract: The accurate and efficient simulation of random heterogeneous media is important in the framework ofThis paper provides a critical examination of existing random field models of heterogeneous two-phase media

Keywords： microstructure     random fields     level sets     shape recovery     two-phase media    

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Novel precision piezoelectric step rotary actuator

LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 356-360 doi: 10.1007/s11465-007-0062-2

Abstract: A novel piezoelectric (PZT) precision step rotary actuator was developed on the basis of PZT technology

Keywords： developed     stability     ineffective anchoring/loosening     technology     piezoelectric    

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A valveless piezoelectric pump with novel flow path design of function of rectification to improve energy

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0685-3

Abstract: Existing valveless piezoelectric pumps are mostly based on the flow resistance mechanism to generatefield simulation, the proposed tubes were integrated into a piezo-driven chamber, and a novel valveless piezoelectricThe development of NVPPFR compensated for the inefficiency of traditional valveless piezoelectric pumps

Keywords： composite tube     valveless piezoelectric pump     rectification     energy efficiency    

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Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 401-408 doi: 10.1007/s11465-013-0272-8

Abstract:

For axisymmetric piezoelectric cylinder, the reciprocal theorem and the axisymmetric general solutiondeveloped by Gregory and Wan is converted into necessary conditions on the end-data of axisymmetric piezoelectricon the end of cylinder, these decaying state conditions for the case of axisymmetric deformation of piezoelectricformulation of boundary conditions for the theory solution (or the interior solution) of axisymmetric piezoelectric

Keywords： solid and structures     the axisymmetric deformation     the piezoelectric circular cylinder     the refined theory    

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Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0683-5

Abstract: Piezoelectric actuators have received substantial attention among the industry and academia due to quickHowever, the design of piezoelectric actuators always suffers from the emergence of several localizedcurrent paper is to propose a robust isogeometric topology optimization (RITO) method for the design of piezoelectricthe conventional finite element method is applied to compute the unknown electro elastic fields in piezoelectricFinally, the RITO formulation for the design of piezoelectric materials is developed, and several numerical

Keywords： piezoelectric actuator     isogeometric topology optimization     uniform manufacturability     robust formulation    

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Comparison between four piezoelectric energy harvesting circuits

Jinhao Qiu, Hao Jiang, Hongli Ji, Kongjun ZHU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 153-159 doi: 10.1007/s11465-009-0031-z

Abstract: This paper investigates and compares the efficiencies of four different interfaces for vibration-based energy harvesting systems. Among those four circuits, two circuits adopt the synchronous switching technique, in which the circuit is switched synchronously with the vibration. In this study, a simple source-less trigger circuit used to control the synchronized switch is proposed and two interface circuits of energy harvesting systems are designed based on the trigger circuit. To validate the effectiveness of the proposed circuits, an experimental system was established and the power harvested by those circuits from a vibration beam was measured. Experimental results show that the two new circuits can increase the harvested power by factors 2.6 and 7, respectively, without consuming extra power in the circuits.

Keywords： energy harvesting     piezoelectric materials     synchronized switching    

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Performance analysis of piezoelectric bimorph generator

KAN Junwu, TANG Kehong, ZHAO Hongwei, SHAO Chenghui, ZHU Guoren

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 151-157 doi: 10.1007/s11465-008-0039-9

Abstract: In this paper, the theoretical model and simulation of the performance of a piezoelectric (PZT) bimorphThe generator consists of two piezoelectric plates bonded on a substrate metal plate.The results show that there is a optimal thickness ratio for a piezoelectric bimorph generator to achieve

Keywords： piezoelectric bimorph     substrate     addition     PZT     mechanical    

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Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 458-464 doi: 10.1007/s11709-011-0133-7

Abstract: This paper presents a numerical simulation study on electromechanical impedance technique for structural damage identification. The basic principle of impedance based damage detection is structural impedance will vary with the occurrence and development of structural damage, which can be measured from electromechanical admittance curves acquired from PZT patches. Therefore, structure damage can be identified from the electromechanical admittance measurements. In this study, a model based method that can identify both location and severity of structural damage through the minimization of the deviations between structural impedance curves and numerically computed response is developed. The numerical model is set up using the spectral element method, which is promised to be of high numerical efficiency and computational accuracy in the high frequency range. An optimization procedure is then formulated to estimate the property change of structural elements from the electric admittance measurement of PZT patches. A case study on a pin-pin bar is conducted to investigate the feasibility of the proposed method. The results show that the presented method can accurately identify bar damage location and severity even when the measurements are polluted by 5% noise.

Keywords： PZT     piezoelectric impedance     optimization     spectral element     damage identification    

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Development and application prospects of piezoelectric precision driving technology

ZHAO Chunsheng, ZHANG Jiantao, ZHANG Jianhui, JIN Jiamei

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 119-132 doi: 10.1007/s11465-008-0034-1

Abstract: As a category of non-electromagnetic driving technology, piezoelectric driving technology becomes anThis paper presents the development of piezoelectric precision driving technology at home and abroad

Keywords： Electromagnetic     ultra-precision processing     technology     piezoelectric     cumbrous    

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Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 5, doi: 10.1007/s11783-018-1068-1

Abstract:

Check-in and survey data are explored to identify personal activity-specific places.

Ways for detecting and moderating sample bias of Weibo check-in data is proposed.

A graphic representation of urban activity intensity in Beijing, China is presented.

The potential application of Weibo check-in data for urban analysis is introduced.

Keywords： Social media     Human mobility     Population bias     Sample reconstruction     Data integration    

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Title Author Date Type Operation

Investigation of Generalized SIFs of cracks in 3D piezoelectric media under various crack-face conditions

Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN

Journal Article

Review on piezoelectric actuators: materials, classifications, applications, and recent trends

Journal Article

Research on applications of piezoelectric materials in smart structures

Jinhao QIU, Hongli JI

Journal Article

Present situation and classification of piezoelectric pump

Fang YE, Shouyin WANG, Wei CHENG, Qixiao XIA, Jianhui ZHANG,

Journal Article

Transport of antibiotic resistance plasmids in porous media and the influence of surfactants

Peipei Chen, Chaoqi Chen, Xiqing Li

Journal Article

Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Journal Article

Novel precision piezoelectric step rotary actuator

LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming

Journal Article

A valveless piezoelectric pump with novel flow path design of function of rectification to improve energy

Journal Article

Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Journal Article

Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Journal Article

Comparison between four piezoelectric energy harvesting circuits

Jinhao Qiu, Hao Jiang, Hongli Ji, Kongjun ZHU

Journal Article

Performance analysis of piezoelectric bimorph generator

KAN Junwu, TANG Kehong, ZHAO Hongwei, SHAO Chenghui, ZHU Guoren

Journal Article

Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Journal Article

Development and application prospects of piezoelectric precision driving technology

ZHAO Chunsheng, ZHANG Jiantao, ZHANG Jianhui, JIN Jiamei

Journal Article

Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

Journal Article